1- FARMERS OF FORTY CENTURIES: ORGANIC FARMING IN CHINA, KOREA AND JAPAN

 https://www.resilience.org/stories/2012-03-23/farmers-forty-centuries-organic-farming-china-korea-and-japan/

2-Principles of Environmental Science

Kenneth E.F. Watt

https://www.goodreads.com/book/show/3678520-principles-of-environmental-science

3- Mapping Energy Flows by Howard Odum

Click to access Mapping-Energy-Flows-by-Howard-T-Odum.pdf